Metal reinforce for concrete structures.



E. WHITE. 7 METAL REINFOBCE FOB- CONCRETE STRUCTURES.

A'PPLIUATIDH FILED SEPT. S, 1908.

917,822. Patented Apr. 13, 1909.

' 4K5 7 a W '35 outer ends.

ELI WHITE, OF

PATEN T OFFICE.

NEW YORK, N. Y.

METAL REINFORCE FOB QONCRETE STRUCTURES.

To all whom it ma 1 concern:

Be it known that 1, Eu WHITE, a citizen of the United States, residing at New York, in the county of New York and State of New 5 l ork, have invented certain new and useful Metal Reinforces for Concrete Structures, of

- which the following is a specificationf 11y invention relates to a device for reinforcing concrete, which comprises a series of lo steel bars or metal members bound together at interval. by means of a pluralitr of clamps all of whic are connected together to prevent the slipping of the clamps and to retain them in their correct positions on the series 15 'of steel bars or metal members, the ends of which are bent upward so as to act as shear bars when the reinforcement is embedded in concrete.

The, objects of my invention are to provide '-2u a reinforcement for concrete which shall be efiicient in resisting tensile and shearing stresses to which the same is subject.

Further objects of the invention are to construct a very economical reinforcement .25 which may be shipped from one place to another, in a very compact form, the series of steel bar's being so bound together that the ends may be bent upward just before the I reinforcement is laced into position. 3Q 7 Referring to t edraudngs: Figure 1 is a side elevation of a reinforcement constructed in accordance with my invention. Fig. 2 is a plan view of the clamping member the clamps of which are broken away on their Fig. 3 is a plan view of an alternate form of. clamping member. Fig. 4 is a side elevation of a reinforcement ready for shi ment.

the drawings 13,, B 40 steel bars or metal memb any desired'crosssection, the same being preferably rectangular in shape and placed together with their broad faces adjacent to each other. These bars as shown in the figure are preferably of difierent lengths, the

upper bar being in general shorter and thinner than the other bars which may varing lengths and thicknesses.

. he bars as shown in the figures are secured together at intervals by, means of clamps T which may be made of wires securely fastened around the bars as shown in Fig. 1. The clamps T are held rigidly in B, and B 4 designate ers which may be of position by means of a longitudinal connectmg member \V which is welded to the clamp T as shown In Fig.

2 so as to prevent. th

Specification of Letters Patent.

Application filed September 9, 1908.

be of Patented April 13, 1909.

Serial No. 452,168.

{ clamps T from sli ping lengthwise along the E bar. The ends oi the longitudinal member are preferably bent over the ends of the bar B, and secured thereto by means of clamps T as shown in Fig. 1.

It will be noticed that 'the clamps T are preferably situated at the point where the ends'of the bars are bent upward, thereby marking the correct place at which the bars should be bent, so that the bars may be bound to 'ethcr at the factory as shown in Fig. 4 and when desired for use the ends can be bent upward in the correct position in a very simple manner, the longitudinal member ll reventing the clamps T from slipping.

In l ig. 3 the clam ing members T, are shown welded to the ottom bar B, but I prefer the construction shown in Fig. 1, as

the same is less expensive.

Economy of reinforcement to resist the direct tensile stress in beams is secured by virtue of the factthat the lengths of the horizontal portions of the bars need be no greater than is required by the varying amounts of a bending moment. Eiliciency of both tensile and.shear reinforcement 18 secured by luifly'ug the shear bars a direct continuation er the tensile reinforccn'ient. The horizontal portions of the bars act as tensile reinforcement and the inclined.extremities act as shear reinforcement.

While the invention has been described with particular reference to details of construction, it is not to be limited thereto, as manv changes me. be made and still fall within the scope oi the appended claims.

What I do claim and desire to secure by Letteis Patent is:

1. A metal reinforce for concrete structure, comprising a series of metal members of different lengths, clamps for securing said members together, said clamps being secured to said members near the, ends thereof at points where it-is intended the metal members should bebcnt upward, and a longitudinal connecting member welded to said clamps for holding the clamps in position.

2. A metal reinforce for concrete structures, comprising a series of metal members, clamps for securing said members together and a longitudinal connecting member welded to said clamps, 'gitudinal connecting member being bent over the ends of one of said metal members.

3. A metal reinforce for concrete structures, comprising a series of metal members,

the ends of said lon- 2 BEST AVAILABLE C05 I 91 clamps for securing said members together.

9, ion 'tudinal connecting member welded to sni clamps, the ends of said longitudiml connecting member being bent over the ends of one of said metal members and clamps for securing the bent ends of said longitudinal connecting member.

4. A metal reinforce for concrete structure, comprising a series of'metel members of different lengths, wire clamps for securing said members together, said clam s being secured to said members near t to ends thereof at oints where it is intended the metal mein ers should be bent upward, and a longitudinal connecting member welded to said clamps for holding the clamps in position.

5. A metal reinforce for concrete struc- Witnesses FRANces A. Wiu're. Ross BITE.

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